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WEA
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∙ 12y ago
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Is substance melts proof that a chemical change has occurred?
no unless there is a chemical change but there isn't. only a physical change has occurred
When a substance changes into a different substance a blank change has occurred?
If form changes but identity doesn't change then it is a physical change.
Why is it a physical change when you mix sugar and water together?
The Physical change occurs when the sugar dissolves into the water. The Sugar is no longer there which has been a physical change from when it occurred.
How you tell if matter has undergone a chemical change or a physical change?
If a chemical change has occurred, the chemical composition has changed and new products will have formed, different from the reactants. If a physical change has occurred, the chemical composition does not change and no new products will have formed.
When you fix broken chair what physical change occurred?
hahahahhaa
When objects change by tearing crushing or melting but do not change into different substances a?
A physical change has occurred.
Is water boiling in a pan a chemical or physical change?
It's a physical change because no chemical change has occurred in any series of fluids
Is broken pieces a sign that a chemical change has occured?
Not really. A broken glass is still glass; no chemical change has occurred. But it is physically different, so it is better to say a physical change happened.
When the chemical composition of rock changes what has occurred?
Chemical change not a physical. A CHEMICAL CHANGE
When atoms rearrange to form matter with different properties what type of change has occurred?
physical change
When substances are formed that are different from the starting substances has physical change occurred?
A chemical reaction is a chemical change.
When you dye your hair is that physical change or chemical change?
Yes it is a chemical change because color change is an observed change that a chemical change has occurred. So you are very much right. :)
